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Gengze Xu

3 accepted papers

2025

Stability and Generalization of Zeroth-Order Decentralized Stochastic Gradient Descent with Changing Topology

AAAI 2025technical

Zeroth-order (ZO) optimization as the gradient-free method has become a powerful tool when the first-order gradient is unavailable or expensive to obtain, especially in decentralized learning scenarios where data and computational resources are distributed across multiple clients. There have been ma…

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2025

Theoretical Insights into Fine-Tuning Attention Mechanism: Generalization and Optimization

IJCAI 2025

Large Language Models (LLMs), built on Transformer architectures, exhibit remarkable generalization across a wide range of tasks. However, fine-tuning these models for specific tasks remains resource-intensive due to their extensive parameterization. In this paper, we explore two remarkable phenomen

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